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  • Varistor Testing (.pdf)
    high voltages and currents, the user must exercise appropriate safety precautions. It is important to focus on the key characteristics and ratings to determine if the component can perform as expected. Typically, for a varistor, its nominal voltage, clamping voltage, standby current, insulation
  • Littelfuse Varistor Design Examples (.pdf)
    for any practical rectifier, so some suppression must be added. It is desirable to use the built-in impedance of the coil to drop the remaining voltage, so the suppressor would best be applied as shown. A selection process for a Littelfuse varistor is as follows:
  • Affordable Transient Protection - Filter Connectors with Multilayer Planer Varistor Arrays
    noise. "But what about cost? - add filtering and a $10 connector becomes a $100 connector - add protection against voltage spikes and you are looking at a $1,000 connector!" May be so but "times, they are a-changing". The ultimate Filter Capacitor, the Multilayer Planar Array is now available
  • Littelfuse Varistors - Basic Properties, Terminology and Theory (.pdf)
    Varistors are voltage dependent, nonlinear devices which have an electrical behavior similar to back-to-back zener diodes. The symmetrical, sharp breakdown characteristics shown in Figure 1 enable the varistor to provide excellent transient suppression performance. When exposed to high voltage
  • Selecting an ESD Suppressor (.pdf)
    Littelfuse offers three device technologies for the suppression of ESD events and other EMC-related transients. These are the MultiLayer Metal Oxide Varistor, silicon (SCR/Diode Array and TVS Avalanche Diode Arrays) and Polymeric Voltage Variable Material technologies. Though these products have

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